Finding the Fourth Proportional to 86,289,324.70, 129,433,987.05 and 40,939,692.70
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Solution
The fourth proportional to 86,289,324.70, 129,433,987.05 and 40,939,692.70 is: 61,409,539.05
Step by Step Solution
- Step 1: Write the proportion equation
86,289,324.70 : 129,433,987.05 = 40,939,692.70 : x - Step 2: Convert to fraction form
86,289,324.70/129,433,987.05 = 40,939,692.70/x - Step 3: Cross multiply
86,289,324.70x = 129,433,987.05 × 40,939,692.70 - Step 4: Simplify right side
86,289,324.70x = 5,298,987,654,762,780 - Step 5: Solve for x
x = 5,298,987,654,762,780/86,289,324.70 - Step 6: Final answer
x = 61,409,539.05
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.